Bij het exporteren naar PostNl foutmelding

Na het updaten van de WordPress naar de laatste versie, verschijnt de onderstaande foutmelding na het klikken op de knop ′Export to PostNl′.
Kunnen jullie zien waar het mis gaat. Er staat ′country Does not match the regex pattern′, maar United Kingdom is wel zeker een mogelijkheid in het systeem.

Hopelijk kunnen jullie snel zien wat hier het probleem is!

Groeten Nicole

Error in MyParcel API request: 0 - data.shipments[0].customs_declaration.items[0].country Does not match the regex pattern ^[A-Z]{2}$ - Failed validation against JSON-SCHEMA shipment/post_shipments_request-v1.1.json (request_id: 1660078814.53962f2cade8395d) Url: https://api.myparcel.nl/shipments Request: {"data":{"shipments":[{"recipient":{"cc":"GB","person":"Jim Bond","postal_code":"EH13 0LD","city":"Edinburgh","email":"[email protected]","phone":"+447585060408","street":"5 Rustic Cottages","street_additional_info":"Colinton Road"},"carrier":1,"reference_identifier":"8011","options":{"package_type":1,"label_description":"8011","only_recipient":0,"signature":0,"return":0,"delivery_date":"2022-08-10 21:00:14","delivery_type":2},"general_settings":{"save_recipient_address":0,"disable_auto_detect_pickup":0},"physical_properties":{"weight":441},"customs_declaration":{"contents":1,"weight":441,"items":[{"description":"Short Sleeves Mosaic Circles green - XL","amount":1,"weight":280,"classification":"62052","country":"Afghanistan","item_value":{"amount":7000,"currency":"EUR"}}],"invoice":"8011"}}]}}